6660323 has 4 divisors (see below), whose sum is σ = 6802080. Its totient is φ = 6518568.

The previous prime is 6660307. The next prime is 6660337. The reversal of 6660323 is 3230666.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3230666 = 2 ⋅1615333.

It is a cyclic number.

It is not a de Polignac number, because 6660323 - 2⁴ = 6660307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6660292 and 6660301.

It is not an unprimeable number, because it can be changed into a prime (6660023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70808 + ... + 70901.

It is an arithmetic number, because the mean of its divisors is an integer number (1700520).

Almost surely, 2^6660323 is an apocalyptic number.

6660323 is a deficient number, since it is larger than the sum of its proper divisors (141757).

6660323 is a wasteful number, since it uses less digits than its factorization.

6660323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141756.

The product of its (nonzero) digits is 3888, while the sum is 26.

The square root of 6660323 is about 2580.7601593329. The cubic root of 6660323 is about 188.1474906427.

Adding to 6660323 its reverse (3230666), we get a palindrome (9890989).

The spelling of 6660323 in words is "six million, six hundred sixty thousand, three hundred twenty-three".